Struct CapacityCounter 

pub struct CapacityCounter { /* private fields */ }

Validated occupancy bounded by one nonzero signed limit.

Implementations

impl CapacityCounter

pub const fn try_new( limit: u64, occupied: u64, ) -> Result<Self, CapacityCounterInvariantError>

Restores one counter only when its limit is nonzero and occupancy fits.

Errors

Returns CapacityCounterInvariantError::ZeroLimit for a zero limit or CapacityCounterInvariantError::OccupiedExceedsLimit when persisted occupancy is outside the inclusive 0..=limit domain.

pub const fn limit(self) -> u64

Returns the signed nonzero limit.

pub const fn occupied(self) -> u64

Returns current validated occupancy.

pub const fn is_full(self) -> bool

Returns whether another row would exceed the signed limit.

Trait Implementations

impl Clone for CapacityCounter

fn clone(&self) -> CapacityCounter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CapacityCounter

impl Debug for CapacityCounter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CapacityCounter

impl PartialEq for CapacityCounter

fn eq(&self, other: &CapacityCounter) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CapacityCounter